@charset "utf-8";

img {
    width: 100%;
}
a {
    text-decoration: none;
    color: #333;
}
ul {
    margin: 0px;
    padding: 0px;
}
li {
    list-style: none;
}
body {
    margin: 0;
    padding: 0;
    header {
        width: 100%;
        margin: 0;
        padding: 0;
        nav{
            background-color: #222;
            div:nth-child(1) {
                .header_logo {
                    img {
                        margin-top: 7px;
                        width: auto;
                    }
                }
            }

            div:nth-child(2) {
                ul {
                    display: flex;
                    padding: 0;
                    margin: 0;
                    li {
                        a {
                            display: block;
                            line-height: 50px;
                            padding: 0 0.5vw;
                            color: #ddd;
                        }
                    }

                    .actived_page {
                        a {
                            display: block;
                            color: white;
                            background-color: black;
                        }
                    }
                }
            }
            div:nth-child(3) {
                .lan_btn {
                    float: right;
                    width: max-content;
                    padding: 0 20px;
                    position: relative;
                    font-size: 18px;
                    line-height: 50px;
                    color: white;

                    .lan_draw_down {
                        position: absolute;
                        width: 100%;
                        left: 0;
                        top: 0;

                        ul {
                            margin-top: 50px;
                            background-color: #333;
                            width: 100%;

                            li {
                                width: 100%;
                                text-align: center;
                                font-size: 17px;
                                line-height: 50px;
                            }
                        }
                    }
                }
            }
        }

        > .lunbo {
            img {
                width: 80%;
            }
        }
    }
}
